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// Copyright 2017 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/fxfa/cxfa_ffline.h"
#include "third_party/base/notreached.h"
#include "xfa/fgas/graphics/cfgas_gecolor.h"
#include "xfa/fgas/graphics/cfgas_gegraphics.h"
#include "xfa/fgas/graphics/cfgas_gepath.h"
#include "xfa/fxfa/parser/cxfa_edge.h"
#include "xfa/fxfa/parser/cxfa_line.h"
#include "xfa/fxfa/parser/cxfa_value.h"
namespace {
CFX_GraphStateData::LineCap LineCapToFXGE(XFA_AttributeValue iLineCap) {
switch (iLineCap) {
case XFA_AttributeValue::Round:
return CFX_GraphStateData::LineCap::kRound;
case XFA_AttributeValue::Butt:
return CFX_GraphStateData::LineCap::kButt;
default:
return CFX_GraphStateData::LineCap::kSquare;
}
}
} // namespace
CXFA_FFLine::CXFA_FFLine(CXFA_Node* pNode) : CXFA_FFWidget(pNode) {}
CXFA_FFLine::~CXFA_FFLine() = default;
void CXFA_FFLine::GetRectFromHand(CFX_RectF& rect,
XFA_AttributeValue iHand,
float fLineWidth) {
float fHalfWidth = fLineWidth / 2.0f;
if (rect.height < 1.0f) {
switch (iHand) {
case XFA_AttributeValue::Left:
rect.top -= fHalfWidth;
break;
case XFA_AttributeValue::Right:
rect.top += fHalfWidth;
break;
case XFA_AttributeValue::Even:
break;
default:
NOTREACHED_NORETURN();
}
} else if (rect.width < 1.0f) {
switch (iHand) {
case XFA_AttributeValue::Left:
rect.left += fHalfWidth;
break;
case XFA_AttributeValue::Right:
rect.left += fHalfWidth;
break;
case XFA_AttributeValue::Even:
break;
default:
NOTREACHED_NORETURN();
}
} else {
switch (iHand) {
case XFA_AttributeValue::Left:
rect.Inflate(fHalfWidth, fHalfWidth);
break;
case XFA_AttributeValue::Right:
rect.Deflate(fHalfWidth, fHalfWidth);
break;
case XFA_AttributeValue::Even:
break;
default:
NOTREACHED_NORETURN();
}
}
}
void CXFA_FFLine::RenderWidget(CFGAS_GEGraphics* pGS,
const CFX_Matrix& matrix,
HighlightOption highlight) {
if (!HasVisibleStatus())
return;
CXFA_Value* value = m_pNode->GetFormValueIfExists();
if (!value)
return;
FX_ARGB lineColor = 0xFF000000;
float fLineWidth = 1.0f;
XFA_AttributeValue iStrokeType = XFA_AttributeValue::Unknown;
XFA_AttributeValue iCap = XFA_AttributeValue::Unknown;
CXFA_Line* line = value->GetLineIfExists();
if (line) {
CXFA_Edge* edge = line->GetEdgeIfExists();
if (edge && !edge->IsVisible())
return;
if (edge) {
lineColor = edge->GetColor();
iStrokeType = edge->GetStrokeType();
fLineWidth = edge->GetThickness();
iCap = edge->GetCapType();
}
}
CFX_Matrix mtRotate = GetRotateMatrix();
mtRotate.Concat(matrix);
CFX_RectF rtLine = GetRectWithoutRotate();
CXFA_Margin* margin = m_pNode->GetMarginIfExists();
XFA_RectWithoutMargin(&rtLine, margin);
GetRectFromHand(rtLine, line ? line->GetHand() : XFA_AttributeValue::Left,
fLineWidth);
CFGAS_GEPath linePath;
if (line && line->GetSlope() && rtLine.right() > 0.0f &&
rtLine.bottom() > 0.0f) {
linePath.AddLine(rtLine.TopRight(), rtLine.BottomLeft());
} else {
linePath.AddLine(rtLine.TopLeft(), rtLine.BottomRight());
}
CFGAS_GEGraphics::StateRestorer restorer(pGS);
pGS->SetLineWidth(fLineWidth);
pGS->EnableActOnDash();
XFA_StrokeTypeSetLineDash(pGS, iStrokeType, iCap);
pGS->SetStrokeColor(CFGAS_GEColor(lineColor));
pGS->SetLineCap(LineCapToFXGE(iCap));
pGS->StrokePath(linePath, mtRotate);
}
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